When Astronomers Make Counts of How Many Quasars There Are

question 18

Multiple Choice

When astronomers make counts of how many quasars there are at different distances from us, what do they find?

• A) there are more quasars closer to us than farther away
• B) the largest number of quasars can be found at about a distance of 1 million LY away from us
• C) the number of quasars is pretty much the same at every range of distances (as many are close to us as far away)
• D) the largest number of quasars were found exactly at the time of the big bang (when the universe began); quasars have been declining steadily in numbers ever since
• E) the largest number of quasars can be seen at about the distance corresponding to a time when the universe was only 20% its current age (a time when the universe was still young)

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